package/prelink-cross: new package

package/prelink-cross: new package

Prelink-cross emulates a runtime linker for a given sysroot. This is
necessary to allow gobject-introspection to build its typelib files
during cross-compiling.

We're using a sha1 on the cross_prelink branch, as we need the
RTLD-enabled variant of prelink-cross.

Signed-off-by: Adam Duskett <Aduskett@gmail.com>
[yann.morin.1998@free.fr:
  - drop HOST_ prefix for inherited variables
  - fix licensing info to "or-later"
]
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>